linux-kernel - Re: [PATCH] kbuild: fixdep: Check fstat(2) return value

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:	Sat, 16 Jan 2016 14:14:27 -0500
From:	Tom Rini <trini@...sulko.com>
To:	linux-kbuild@...r.kernel.org
Cc:	Michal Marek <mmarek@...e.com>, lk <linux-kernel@...r.kernel.org>,
	stable@...r.kernel.org
Subject: Re: [PATCH] kbuild: fixdep: Check fstat(2) return value

On Mon, Dec 7, 2015 at 4:26 PM, Tom Rini <trini@...sulko.com> wrote:

> Coverity has recently added a check that will find when we don't check
> the return code from fstat(2).  Copy/paste the checking logic that
> print_deps() has with an appropriate re-wording of the perror() message.
>
> Cc: Michal Marek <mmarek@...e.com>
> Cc: linux-kbuild@...r.kernel.org
> Cc: linux-kernel@...r.kernel.org
> Signed-off-by: Tom Rini <trini@...sulko.com>
>
> ---
> Note that I don't have a CID here was I found this in U-Boot and the
> kernel hasn't yet done a build with this test being enabled.
> ---
>  scripts/basic/fixdep.c |    6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/scripts/basic/fixdep.c b/scripts/basic/fixdep.c
> index c68fd61..e3d9678 100644
> --- a/scripts/basic/fixdep.c
> +++ b/scripts/basic/fixdep.c
> @@ -274,7 +274,11 @@ static void do_config_file(const char *filename)
>                 perror(filename);
>                 exit(2);
>         }
> -       fstat(fd, &st);
> +       if (fstat(fd, &st) < 0) {
> +               fprintf(stderr, "fixdep: error fstat'ing config file: ");
> +               perror(filename);
> +               exit(2);
> +       }
>         if (st.st_size == 0) {
>                 close(fd);
>                 return;

Adding stable@ since this applies to 4.4.  Any comments?  Thanks!

-- 
Tom